NFL owners approved two significant rules changes on Wednesday that will take effect in the 2012 regular season.

PALM BEACH, Fla. — NFL owners approved two significant rules changes on Wednesday that will take effect in the 2012 regular season.

Instant replay will include reviews of all turnovers and will not require a coach's challenge. Previously, a coach had to challenge a turnover if he wanted the play reviewed. An official in the press box will decide if a referee should review a turnover.

Owners also voted to have the same rules for overtime in regular-season and playoff games. They adopted a measure two years ago giving each team at least one possession in OT in the playoffs. That system also will be used in the regular season.

The only way a game can end in overtime on the first possession is if the team receiving the kickoff scores a touchdown, or if the defense scores a touchdown or a safety.

Owners voted down a proposal to have replay officials in the press box make the final decision on disputed calls. Referees will continue to rule on replays from a television monitor on the field.

A proposal to expand rosters to 90 players in preseason was tabled until the owners' May meetings. Also tabled was a proposal to extend the trading deadline to after the eighth week of the season instead of after Week 6.

PARCELLSWOULDCONSIDERSAINTSJOBIFASKED:IfBillParcells decides to come out of retirement for a third time to coach the Saints this season, it will be for one reason only.

"If this guy says to me, 'Bill, I need you to do this,'" Parcells said Wednesday in an interview with Newsday. "That's what friends are supposed to be for."

"This guy" refers to Saints coach SeanPayton, who is very close to Parcells and is considering whether to ask the former Giants, Patriots, Jets and Cowboys coach to fill in for him during his suspension for the 2012 season. Payton was suspended for not stopping the Saints' prohibited bounty program.

Parcells, 70, said he has turned down two head-coaching opportunities since retiring from the Cowboys after the 2006 season, but he said this situation is different. "The thing with this one," he said, "it's a little more personal to me, because this is one of my guys."

Parcells hired Payton as an offensive assistant in 2003, and they spent three years together in Dallas before Payton became the Saints' coach in 2006.

JACOBS AGREES WITH 49ERS: The San Francisco 49ers added another member of last season's SuperBowl-champion New York Giants on Wednesday, agreeing to terms with veteran running back BrandonJacobs on a one-year contract.

Jacobs was released March 9 by the Giants after he failed to reach agreement on a restructured deal.

He is expected to play behind FrankGore and could share the backup role with second-year pro KendallHunter.

Jacobs spent seven seasons with New York, winning two SuperBowls and beating the 49ers 20-17 in overtime of the NFC championship game at CandlestickPark on Jan. 22.

Peterson has returned to the Twin Cities this week to begin the next phase of his knee rehabilitation. A little more than 12 weeks since having surgery to repair torn anterior cruciate and medial collateral ligaments in his left knee, the star running back has been cleared to try running on land again.